If you are really really good and even if you ain’t. Wear this flashing feather halo and you’ll look like a you’re a saint. Plastic and fabric ribbons flowing from the back enhance the gorgeous look. To activate simply press the button on the battery pack. There are 3 light functions. Choose from 2 flashing light sequences or a still light. These Feather and Ribbon Halos will be a hit all year long as party favors and gifts. Diameter: 7 in. , 17.78 cm. – Halo Size: One size fits most – Led Colors: 2 Yellow, 2 Red, 2 Purple – 2 AG13 Batteries included and installed.